Map top-15 contact/caller id apps

Greetings! Dear Sir! We have a few very good sources and links with us for collecting the details of "top-15 contact/caller id apps" as you require. We will complete the task in 1-2 hours with high accuracy. Thanks Vishal

i literally just finished doing a job for someone else asking me to map the top 15 consumer email data brokers in the US, he said 10 days and i did it in 2. i believe that studying 'research skills' at college has helped in do this as i ffind information very easily. im also young and have a lot of free time